Perhaps you should try some spelling variations:
danh dien » dinh dien, danh kien, danh lien
dien cuc » dien tu, dieu cua, vien cac
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cuc tre » duc tre, cua tre, cuu tre
sach v » sach va, sach 2, sach vay
soc va » hoc va, loc va, goc va
doc va » duoc va, hoc va, duc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach v) or (sach y)) nang xa hoi. hieu va tham ((soc va) OR (doc va)) danh dien cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach y)) nang xa hoi. hieu va tham ((soc va) OR (doc va)) danh dien cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach y)) nang xa hoi. hieu va tham ((soc va) OR (doc va)) danh dien cuc tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach y)) nang xa hoi. hieu va tham ((soc va) OR (doc va)) danh dien cuc tre*.